| Type: | Municipality |
| Official Name: | Aínsa-Sobrarbe |
| Native Name: | L'Aínsa-Sobrarbe (Aragonese) |
| Pushpin Map: | Spain |
| Subdivision Name: |  Spain |
| Subdivision Name2: | Huesca |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Sobrarbe |
| Leader Title: | Mayor |
| Leader Name: | José Miguel Cheliz Pérez |
| Area Total Km2: | 285 |
| Elevation M: | 569 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 42.4172°N 0.1386°W |
Aínsa-Sobrarbe (in Aragonese: L'Aínsa-Sobrarbe) is a municipality located in the province of Huesca, Aragon, Spain. As of 2010 (INE), the municipality has a population of 2,180 inhabitants.
Aínsa is the economic development capital of the Sobrarbe comarca (administrative subdivision).
Aside from the main town of Aínsa, the following villages are within Aínsa-Sobrarbe's municipal area:
The following formerly populated places are now uninhabited: Bagüeste, Pacinias, Cerollar, Casa Sierra, Casa Linás, Escapa, La Lecina, Linés, La Capana and Puibayeta.
There are also small hamlets in the municipality limits that are inhabited only occasionally, like Casa Almunia, Molino López, Molino Villacampa, Molino Jabierre, Sarratiás, Sarrato, Coronillas, Pelegrín and Gabardilla.